
/**
 * @author pacai
 * @version 1.0
 */
public class DocComment {
	public static void main(String[] args) {
		//选中，然后输入tab整体右移
		//选中 然后输入shift+tab整体左移
		int n1 = 10;
		int n2 = 20;
		int num = n1 + n2;
		System.out.println(num);
	}
}